I sing to myself while driving my bike. No one can hear me in the wind and the rumbling purr of my 1982 Honda Cub, lime-green if you want to know. But on my way to meet with a new student, the purr became a thunderous rattle, and I couldn’t hear my own voice anymore. After the short meeting, the Cub was completely shot. The kickstarter shook loose, the brake pedal was jiggling but somehow also stuck. With every attempt at the gas the rattle grew louder, opaque exhaust spewed into the air. The quiet black alleys of West Lake reached new heights of emptiness as I solemnly rolled the machine forward. What could I do? Mechanics were all closed at this hour. I…